“Whether Unity 8 actually loads for you after you ‘log in’ will depend, largely, on which graphics card you have and which drivers you use with it. Unity 8 (or rather Mir, the display server that Unity 8 runs on) only plays nice with open-source Nvidia (nouveau) and open-source Intel GPU drivers.”

Okay, so only people with NVidia Fermi GPUs and Intel Laptops can use it.

Remember during Debconf14, when asked about Wayland, John Vert from VALVe said that without any clear advantage to Wayland over X when it comes to games, they see no reason to support it.

What do you think will happen to Mir when you can’t even use the proprietary Nvidia drivers or ANY AMD drivers along with it?

They work swimmingly with Wayland, right?

If people can’t play their games, they’re not going to use your little pet project.